NI Gets Bog of Doom of its very own

Sponge Bob

It is only a little one but it is holding up the A4 widening near Ballygawley

Over to Wesley the one man Infrastructure forum.

http://www.wesleyjohnston.com/roads/a4dualling.html



( Caption = The Infamous "Bog of Doom" east of Cabragh, where the road bed is continuing to sink into the ground despite huge amounts of work. Seen on 20 June 2010" )

Also

There do seem to be problems with construction of the new carriageway across a section of bog at Cabragh, near Quinn's Corner. According to the Irish News on 17th May (no free access to story online), both the road foundations and 160-foot piles that were inserted to stabilise the site have also disappeared.

Whereas our bog of doom in Drominboy near Limerick eventually bottomed out at around 160 feet and Annaholty is roughly the same.

nordydan

It was a big effort completing the northern M1 through the bog in the 1960's, this should come as no surprise

Victor

For the Athlone Bypass they just kept building up the embankment. I think it lost 6-8m in height over the full width and along several km.

On the Cork South Ring Road, there were excavations as deep as 14m at the Sarsfield Road and Kinsale Road.

Sponge Bob

Victor wrote: »

For the Athlone Bypass they just kept building up the embankment. I think it lost 6-8m in height over the full width and along several km.

Ah no Victor , that was the Dutch "Bog Squashing" technique that was in vogue c.1983-1989 , we discussed it around here some months back

The surplus was scraped off afterwards. It seems to have worked well enough in Athlone TBH but there are some rather iffily squashed bogs south of the Coonagh Roundabout on the Ennis Road and on the Quincentennial Bridge eastern approach in Galway City and around Bunratty castle.

Soil Mechanic

Said it once, said it a 1,000 times:

"You pay for a Site Investigation whether you have one or not"

Bog squashing -mewuh!

What we need is some newfangled Canadian know-how!
http://www.gaiacontractors.com/_english/4_applications_01.html
Just think of the expertise we have here in the country (sarcasm.... :cool:)


Ahh peat...*chuckles*

SM

Sponge Bob

I take it this has not been tried either side of the border Has anyone ever done it to a bog ( raised or blanket) ...or has has it been used for soil? It is not newfangled, been around since WW2 .

http://www.wsdot.wa.gov/research/reports/fullreports/348.1.pdf

The land around the Somme must be pretty well done by now.

Sponge Bob

They are thinking of doing the R336 road west of Galway across miles of blanket bog underlain by Granite. Soild Mechanic is most welcome to test the application of the Blast Densification technique there.....where he will disturb nobody

L1011

Isn't the A1 Newry BP being eaten by a bog too?

Thats in some state at the moment, at both ends you're running in a single coned off carriageway along a complete DC, then you have to do this insane manoeuvre to get back on to the old bypass and the old DC section to bridge a single junction gap...

ardmacha

Thats in some state at the moment, at both ends you're running in a single coned off carriageway along a complete DC, then you have to do this insane manoeuvre to get back on to the old bypass and the old DC section to bridge a single junction gap...

Is that diversion still in place? I don't know why they don't just divert people off at the A25 junction and so along the entire route of the old bypass.

L1011

It was on Saturday night/Sunday morning at least. Painfully useless as the nice shiney DC bits are coned off!

dubhthach

Sponge Bob wrote: »

They are thinking of doing the R336 road west of Galway across miles of blanket bog underlain by Granite. Soild Mechanic is most welcome to test the application of the Blast Densification technique there.....where he will disturb nobody

Has any route proposals for the R336 been made available. Last time I had a look at Galway CoCo site they just had documents on public consultation regarding the road.

**Edit** I should have just tried google
http://www.galway.ie/en/Services/RoadsTransportation/RoadProjects/R336BearnatoScribviaRosAnMhil/MapsDownloads/TheFile,10501,en.pdf
http://www.galway.ie/en/Services/RoadsTransportation/RoadProjects/R336BearnatoScribviaRosAnMhil/MapsDownloads/TheFile,10500,en.pdf